BMW R 65 Monolever (1984) vs Aprilia SX 50 (2013) vs KTM 890 SMT (2023) vs Yamaha SRV 250S (1995-96) vs Ducati Hypermotard 1100 EVO (2012)
Comparison technical specifications
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| Make: | BMW | Aprilia | KTM | Yamaha | Ducati |
| Model: | R 65 Monolever | SX 50 | 890 SMT | SRV 250S | Hypermotard 1100 EVO |
| Years: | 1984 | 2013 | 2023 | 1995-96 | 2012 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. | Single cylinder, two stroke | Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder | Four stroke, V twin, SOHC | Four stroke, 90° “L” twin cylinder, SOHC, desmodromic 2 valves per cylinder |
| Capacity: | 649.6 cc / 39.6 cu in. | 49.9 cc / 3.04 cu in | 889 cc / 54.2 cu-in | 248 cc / 15.0 cu-in | 1078 cc / 65.8 cu in |
| Bore x Stroke: | 82 x 61.5 mm | 39.9 x 40 mm | 90.7 x 68.8 mm | 49 x 66 mm | 98 x 71.5 mm |
| Compression Ratio: | 8.4:1 | 11.5:1 | 13.5:1 | 9.8 : 1 | 10.0:1 |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled with water/oil heat exchanger | Air cooled | Air cooled |
| Induction: | 2 x Bing constant depression carburetors | Dell'Orto PVHA 17.5 carburetor | DKK DellOrto fuel-Injection throttle body 46mm | 2x Mikuni BDS26 carburetors | Fuel Injection, 45 mm throttle body |
| Starting: | Electric | Kick | Electric | Electric | |
| Transmission: | 5 Speed | 6 speed | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Shaft | Chain | Chain 520 X-Ring | Chain | Chain, front sprocket 15, rear sprocket 42 |
| Front Suspension: | Telescopic hydraulic forks | Hydraulic fork, Ø 40 mm | 43mm WP APEX upside-down forks | Telescopic forks | 50mm Marzocchi forks, fully adjustable |
| Rear Suspension: | Monolever swinging arm | High strength steel swingarm, hydraulic monoshock | WP APEX Monoshock | Dual shocks | Progressive linkage with fully adjustable ZF Sachs monoshock. Aluminium single-sided swingarm |
| Front Brakes: | 2x ∅260mm discs, 2 piston calipers | Single stainless steel disc, Ø 260 mm, floating caliper | 2 x 260mm discs, 4 piston, radially mounted caliper | Single disc | 2 x 305 mm Semi-floating discs, radially mounted Brembo Monobloc calipers 4-pistons, 2-pads |
| Rear Brakes: | Single ∅200mm drum | Single disc, Ø 180 mm, floating caliper | Single 260mm disc, 1 piston floating caliper | Drum | Single 245mm disc, 2-piston caliper |
| Front Tyre: | 90/90 - 18 | 100/80 ZR17 | 120/70 ZR 17 | 90/90-18 | 120/70 ZR 17, Pirelli Diablo Rosso |
| Rear Tyre: | 120/90 - 18 | 130/70 ZR17 | 180/55 ZR 17 | 110/90-18 | 180/55 ZR 17, Pirelli Diablo Rosso |
| Fuel Capacity: | 22 liters / 5.8 US gal | 7 L / 1.85 US gal | 15.8 Litres / 4.2 US gal | NA | 12.4 Litres / 3.3 US gal / 2.7 Imp gal |